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Q: What are the factors of 2xsquared plus x -21?

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-2(x + 5)(x - 6)

(x - 2)(2x - 1)

(x + 4)(2x + 3)

(x - 3)(x + 7)

(x - 2)(2x - 3)

(x - 4)(2x + 3)

It has roots x = 2.618 and x = 0.38197

(x+7) and (x-3)

If you mean: 2xsquared+3x+1 then it is (2x+1)(x+1) when factored

It is: 2x2+4x+2 by dividing all terms by 2 it is then (x+1)(x+1) when factored

f(x) = 2x2 + 4x - 7

x2 + 4x - 21 = (x + 7)(x - 3). The trick is to find 2 numbers which sum to 4 and have a product of -21.

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